CN101785499B - Anti-white-spot modified shellac fruit coating agent and preparation method thereof - Google Patents
Anti-white-spot modified shellac fruit coating agent and preparation method thereof Download PDFInfo
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- CN101785499B CN101785499B CN201010039147A CN201010039147A CN101785499B CN 101785499 B CN101785499 B CN 101785499B CN 201010039147 A CN201010039147 A CN 201010039147A CN 201010039147 A CN201010039147 A CN 201010039147A CN 101785499 B CN101785499 B CN 101785499B
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Abstract
The invention provides an anti-white-spot modified shellac fruit coating agent and a preparation method thereof. The coating agent comprises the following components in part by mass: 10 to 25 parts of modified shellac resin and 75 to 90 parts of 8 to 13 mass percent solvent. The preparation method comprises the following steps of: mixing basic group polymer into the shellac resin and adding the mixture into the solvent to heat and stir until the mixture is completely dissolved; adding fumaric acid drying oil of which the amount is 0.1 to 2 times that of the shellac resin into the obtained mixture to obtain the modified shellac resin; and mixing the modified shellac resin and the 8 to 13 mass percent solvent according to the mass part, and adjusting pH value to 7 to 9 to obtain the anti-white-spot modified shellac fruit coating agent. In the preparation method, the basic group-containing polymer and the fumaric acid drying oil are adopted to modify the shellac, close shellac carboxyl and hydroxyl and make the shellac lose chances of esterification and crosslink generation so as to prevent white spots from appearing on films under a high-temperature and high-humidity environment.
Description
Technical field
The present invention relates to a kind of fruit fruit glaze agent composition that uses lac as film forming matter, particularly use the fruit fruit glaze agent composition of modified shellac as the anti-hickie of film forming matter.
Background technology
With the lac is the fruit fruit glaze agent that film forming matter is processed, and is widely used in the coating-film fresh-keeping field of fruit such as citrus, apple.Can reach reduction fruit respiratory intensity through filming, reduce water loss, beautify effects such as outward appearance.In the prior art be that the fruit fruit glaze agent of film forming matter is many so that to contain ammonia solvent such as ammoniacal liquor, morpholine, triethanolamine etc. be emulsifying agent or be solvent with ethanol and homologue thereof how with the lac; Adopt alkaline solution to regulate PH and process the lac aqueous solution; Composite again other film forming matter such as rosin, gelatin, wax etc. then add plasticizer, bactericide, brightener, antifoaming agent, filler.But different because of compounded technology, the fruit glaze agent quality discrepancy is bigger, and under the ubiquity high temperature, high humidity environment, filming occurs the defective of hickie easily, has had a strong impact on the outward appearance of fruit.This is because contain free hydroxyl group and carboxyl in the lac molecular radical; After fruit glaze agent is coated fruit; The rising acid moisture that produces of fruit will impel the hydroxyl of rete itself and carboxyl further to aggregate into cross linkage; Accelerate when temperature is higher than the polymerization greater than 80% time of 35 ℃, humidity, make rete hickie occur.
Summary of the invention
The purpose of this invention is to provide a kind of with modified shellac as anti-hickie fruit fruit glaze agent of film forming matter and preparation method thereof.The present invention adopts polymer and the fumaric acid drying oil modified shellac that contains basic group, and sealing lac carboxyl and hydroxyl make it to lose esterification and the chance that produces cross linkage take place, thereby avoid rete under high temperature, high humidity environment, hickie to occur.
The modified shellac fruit coating agent of anti-hickie provided by the invention is accomplished through following technical proposal: a kind of modified shellac fruit coating agent of anti-hickie is characterized in that being made up of the component of following mass parts:
10～25 parts of modified shellac resin
Mass concentration is 75～90 parts of 8～13% solvents.
Said solvent is one or more mixtures in ammoniacal liquor, morpholine, triethanolamine, the ethanol, and wherein, the kind of several kinds of mixtures is a combination in any, and mixing ratio is any mass mixing ratio.
In order to improve other characteristics of fruit glaze agent, can in solvent, press convention amount and add in plasticizer, antifoaming agent, bactericide, the pigment one or more.
Said modified shellac resin is that its modifying process is through the lac resin of basic group polymer and the modification of fumaric acid drying oil:
A. it is identical in lac resin, to add in basic group polymer to the basic group polymer in the base molecule number and lac resin the acid molecule number; 0.8～2.0 times the mass concentration that in this mixture, adds mixture quality again is 8%～13% solvent, and heated and stirred is to dissolving fully;
B. 0.1～2 times the amount of fumaric acid drying oil by the lac resin quality joined in the A step gained dissolved matter, stirring and evenly mixing gets modified shellac resin.
The solvent of said a step is one or more mixtures in ammoniacal liquor, morpholine, triethanolamine, the ethanol, and wherein, the kind of several kinds of mixtures is a combination in any, and mixing ratio is any mass mixing ratio.
Said lac resin is a kind of in lac encrusted twig, seed lac, shellac, decolourized shellac, dewaxed shellac, decolouring dewaxed shellac, bleaching shellac, refined bleached lac, the hydrolyzed shellac.
Said basic group polymer is polymer of all band basic groups, a kind of in preferably polyethylene pyridine, polyvinylpyrrolidone, the polyamide.
Said fumaric acid drying oil is the drying oil through the fumaric acid acidifying; Drying oil is sunflower oil or Chinese catalpa oil; Preferred sunflower oil; Its acidization is: with mass parts be 20～40 fumaric acid to put into mass parts be 100 drying oil, stirring reaction is 1～3 hour under 200～300 ℃ of temperature, the fumaric acid drying oil.
The modified shellac fruit coating agent of anti-hickie provided by the invention makes through following method:
A. it is identical in lac resin, to add in basic group polymer to the basic group polymer in the base molecule number and lac resin the acid molecule number; 0.8～2.0 times the mass concentration that in this mixture, adds mixture quality again is 8～13% solvent, and heated and stirred is to dissolving fully;
B. with mass parts be 20～40 fumaric acid to put into mass parts be 100 drying oil, under 200～300 ℃ of temperature, reacted 1～3 hour, the fumaric acid drying oil, wherein drying oil is sunflower oil or Chinese catalpa oil;
C. the fumaric acid drying oil of B step 0.1～2 times amount by the lac resin quality is joined in the A step gained dissolved matter, stirring and evenly mixing, modified shellac resin;
D. be that 8～13% solvent mixes by following mass parts with C step gained modified shellac resin and mass concentration:
10～25 parts of modified shellac resin
Mass concentration is 75～90 parts of 8～13% aqueous solvents
Regulate mixture pH value to 7～9, promptly get the modified shellac fruit coating agent that resists hickie.
When said D step is regulated the mixture pH value, use the conventional acid aqueous slkali to add and regulate.
The present invention compared with prior art has advantage and effect: adopt such scheme; Promptly, can seal lac carboxyl and hydroxyl, make it to lose the chance that esterification and generation cross linkage take place with after containing the polymer and fumaric acid drying oil modified shellac of basic group; Fundamentally solve hickie appears in rete under high temperature, high humidity environment problem; Effectively improve by the quality of fresh-keeping fruit, prolong fruit fresh-keeping, quality guarantee period, thereby provide safeguard for orchard worker and increasing income of operator.
The specific embodiment
Below in conjunction with embodiment the present invention is done and to further describe.
Embodiment 1
A. 18kg refined bleached lac is sneaked in the 3.3kg polyvinylpyrrolidone; In this moment polyvinylpyrrolidone in base molecule number and the refined bleached lac acid molecule number identical; Again this mixture being joined mass concentration is in 13% the 17.04kg ethanol, and heated and stirred is to dissolving fully;
B. the 20kg fumaric acid is put into the 100kg sunflower oil, reaction is 3 hours under 200 ℃ of temperature, gets the fumaric acid drying oil;
C. the fumaric acid drying oil 1.8kg with the B step joins in the A step gained dissolved matter, mixes, and promptly gets modified shellac resin;
D. get C step gained modified shellac resin 10kg and mass concentration and be 13% morpholine aqueous solvent 90kg and mix, and regulate pH value to 7, promptly get the modified shellac fruit coating agent that resists hickie.
Embodiment 2
A. the 20kg dewaxed shellac that decolours is sneaked in the 2.2kg polyvinyl pyridine; In this moment polyvinyl pyridine in base molecule number and the dewaxed shellac that decolours the acid molecule number identical; Again this mixture being joined mass concentration is in 8% the 44.4kg morpholine and triethanolamine mixed solution, and heated and stirred is to dissolving fully;
B. the 40kg fumaric acid is put into 100kg Chinese catalpa oil, reaction is 1 hour under 300 ℃ of temperature, gets the fumaric acid drying oil;
C. the fumaric acid drying oil 40kg with the B step joins in the A step gained dissolved matter, mixes, and promptly gets modified shellac resin;
D. get C step gained modified shellac resin 25kg and mass concentration and be 8% ammoniacal liquor 75kg and mix, and regulate pH value to 9, promptly get the modified shellac fruit coating agent that resists hickie.
Embodiment 3
A. the 25kg seed lac is sneaked in the 4.5kg polyamide; In this moment polyamide in base molecule number and the seed lac acid molecule number identical; Again this mixture being joined mass concentration is in 10% the 30kg triethanolamine solution, and heated and stirred is to dissolving fully;
B. the 30kg fumaric acid is put into 100kg Chinese catalpa oil, reaction is 2 hours under 250 ℃ of temperature, gets the fumaric acid drying oil;
C. the fumaric acid drying oil 20kg with the B step joins in the A step gained dissolved matter, mixes, and promptly gets modified shellac resin;
D. get C step gained modified shellac resin 20kg and mass concentration and be 10% triethanolamine and alcohol mixed solution 80kg and mix, and regulate pH value to 8, promptly get the modified shellac fruit coating agent that resists hickie.
Claims (8)
1. the modified shellac fruit coating agent of an anti-hickie is characterized in that being made up of the component of following mass parts:
10～25 parts of modified shellac resin
Mass concentration is 75～90 parts of 8～13% solvents
Said modified shellac resin is that its modifying process is through the lac resin of basic group polymer and the modification of fumaric acid drying oil:
A. it is identical in lac resin, to add in basic group polymer to the basic group polymer in the base molecule number and lac resin the acid molecule number; 0.8～2.0 times the mass concentration that in this mixture, adds mixture quality again is 8%～13% solvent, and heated and stirred is to dissolving fully;
B. 0.1～2 times the amount of fumaric acid drying oil by the lac resin quality joined in a step gained dissolved matter, stirring and evenly mixing gets modified shellac resin; Said fumaric acid drying oil is: with mass parts be 20～40 fumaric acid to put into mass parts be 100 sunflower oil or Chinese catalpa oil, stirring reaction obtained in 1～3 hour under 200～300 ℃ of temperature.
2. the modified shellac fruit coating agent of anti-hickie as claimed in claim 1; It is characterized in that said solvent is one or more mixtures in ammoniacal liquor, morpholine, triethanolamine, the ethanol; Wherein, the kind of several kinds of mixtures is a combination in any, and mixing ratio is any mass mixing ratio.
3. the modified shellac fruit coating agent of anti-hickie as claimed in claim 1 is characterized in that said lac resin is a kind of in lac encrusted twig, seed lac, shellac, bleaching shellac, the hydrolyzed shellac.
4. the modified shellac fruit coating agent of anti-hickie as claimed in claim 3 is characterized in that said shellac is a kind of in decolourized shellac, the dewaxed shellac.
5. the modified shellac fruit coating agent of anti-hickie as claimed in claim 3 is characterized in that said shellac is the decolouring dewaxed shellac.
6. the modified shellac fruit coating agent of anti-hickie as claimed in claim 3 is characterized in that said bleaching shellac is the refined bleached lac.
7. the modified shellac fruit coating agent of anti-hickie as claimed in claim 1 is characterized in that the polymer of said basic group polymer for the band basic group, a kind of in polyvinyl pyridine, polyvinylpyrrolidone, the polyamide.
8. the preparation method of the modified shellac fruit coating agent of an anti-hickie as claimed in claim 1 is characterized in that through the following step:
A. it is identical in lac resin, to add in basic group polymer to the basic group polymer in the base molecule number and lac resin the acid molecule number; 0.8～2.0 times the mass concentration that in this mixture, adds mixture quality again is 8～13% solvent, and heated and stirred is to dissolving fully;
B. with mass parts be 20～40 fumaric acid to put into mass parts be 100 drying oil, under 200～300 ℃ of temperature, reacted 1～3 hour, the fumaric acid drying oil, wherein drying oil is sunflower oil or Chinese catalpa oil;
C. the fumaric acid drying oil of B step 0.1～2 times amount by the lac resin quality is joined in the A step gained dissolved matter, stirring and evenly mixing, modified shellac resin;
D. be that 8～13% solvent mixes by following mass parts with C step gained modified shellac resin and mass concentration:
10～25 parts of modified shellac resin
Mass concentration is 75～90 parts of 8～13% solvents
Regulate mixture pH value to 7～9, promptly get the modified shellac fruit coating agent that resists hickie.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010039147A CN101785499B (en) | 2010-01-12 | 2010-01-12 | Anti-white-spot modified shellac fruit coating agent and preparation method thereof |
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| CN201010039147A CN101785499B (en) | 2010-01-12 | 2010-01-12 | Anti-white-spot modified shellac fruit coating agent and preparation method thereof |
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| CN101785499A CN101785499A (en) | 2010-07-28 |
| CN101785499B true CN101785499B (en) | 2012-09-05 |
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| CN105901120B (en) * | 2014-07-21 | 2019-08-23 | 上海惠昌化工厂 | A kind of improved preservative fruit wax and preparation method thereof |
| CN105053168B (en) * | 2015-07-15 | 2019-08-09 | 云南绅博源生物科技有限公司 | Fruit capsula preservative and preparation method thereof |
| CN113367188A (en) * | 2021-05-21 | 2021-09-10 | 江苏派乐滋食品有限公司 | Preparation method of rosin-based coating agent |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101176481A (en) * | 2007-12-11 | 2008-05-14 | 中国林业科学研究院资源昆虫研究所 | Cherry biological antimicrobial preserving agent and thereof fresh-keeping method |
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2010
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101176481A (en) * | 2007-12-11 | 2008-05-14 | 中国林业科学研究院资源昆虫研究所 | Cherry biological antimicrobial preserving agent and thereof fresh-keeping method |
Non-Patent Citations (4)
| Title |
|---|
| 廖亚龙等.国内外紫胶深加工技术现状及趋势.《林业科学》.2007,第43卷(第7期),第93-100页. * |
| 李绍家等.紫胶改性的研究.《林业科学研究》.1989,第2卷(第3期),第277-280页. * |
| 董勤等.紫胶的改性研究.《云南大学学报》.2004,第26卷第157-159页. * |
| 黄喜坚等.紫胶的特性及应用.《杭州化工》.2009,第39卷(第1期),第11-15页. * |
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Assignee: KUNMING SUHUA BIOTECHNOLOGY CO., LTD. Assignor: Li Lin Contract record no.: 2011530000067 Denomination of invention: Anti-white-spot modified shellac fruit coating agent and preparation method thereof License type: Exclusive License Open date: 20100728 Record date: 20110819 |
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